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Linux equivalent of the Mac OS X “open” command [closed]

I've found the "open" command in Mac OS X very handy in the command line. From "man open": 7 Answers ...
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What exactly do “u” and “r” string flags do, and what are raw string literals?

...no "escape sequences" to represent newlines, tabs, backspaces, form-feeds, and so on. In normal string literals, each backslash must be doubled up to avoid being taken as the start of an escape sequence. This syntax variant exists mostly because the syntax of regular expression patterns is heavy w...
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Why we should not use protected static in java

...able exists at class level, it does not exist separately for each instance and it does not have an independent existence in classes which extend me. Think about what protected means: This variable can be seen by this class, classes in the same package and classes which extend me. The two mea...
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Passing data between a fragment and its container activity

How can I pass data between a fragment and its container activity? Is there something similar to passing data between activities through intents? ...
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When to use thread pool in C#? [closed]

I have been trying to learn multi-threaded programming in C# and I am confused about when it is best to use a thread pool vs. create my own threads. One book recommends using a thread pool for small tasks only (whatever that means), but I can't seem to find any real guidelines. What are some consid...
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What are the differences between double-dot “..” and triple-dot “…” in Git commit ranges?

Some Git commands take commit ranges and one valid syntax is to separate two commit names with two dots .. , and another syntax uses three dots ... . ...
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C dynamically growing array

I have a program that reads a "raw" list of in-game entities, and I intend to make an array holding an index number (int) of an indeterminate number of entities, for processing various things. I would like to avoid using too much memory or CPU for keeping such indexes... ...
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How to send and retrieve parameters using $state.go toParams and $stateParams?

...ou must not use url when setting up your state. I found the answer on a PR and did some monkeying around to better understand. $stateProvider.state('toState', { templateUrl:'wokka.html', controller:'stateController', params: { 'referer': 'some default', 'param2': 'some default', ...
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How can I read inputs as numbers?

Why are x and y strings instead of ints in the below code? 10 Answers 10 ...
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Why is SELECT * considered harmful?

...s more data to move from the database server to the client, slowing access and increasing load on your machines, as well as taking more time to travel across the network. This is especially true when someone adds new columns to underlying tables that didn't exist and weren't needed when the origina...